London - Arsenal manager Arsene Wenger brushed off his side's 1-0 loss to Swansea City as "an accident" and challenged his players to atone when they visit Manchester United on Sunday.
Arsenal dominated Monday's game at the Emirates Stadium, but having been kept at bay by their former goalkeeper Lukasz Fabianski, they capitulated in the 85th minute when David Ospina was unable to keep out a header from Swansea substitute Bafetimbi Gomis.
United can dislodge third-place Arsenal from the automatic Champions League qualifying positions if they beat them at the weekend and Wenger's annoyance was plain during a post-match press conference in which he said Swansea had "refused to play completely and just defended".